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v3.10.0.1

Shareholders' Equity and Long-Term Incentive Compensation - AOCI (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Components of accumulated other comprehensive income, net of tax [Roll Forward] |  |  |  |
Beginning Balance |  | $ 314.7 |  |
Other comprehensive income (loss), net |  | (5.2) | $ 15.0 | $ (48.2)
Ending Balance |  | 414.9 | 314.7 |
Accum. Other Comprehensive Income |  |  |  |
Components of accumulated other comprehensive income, net of tax [Roll Forward] |  |  |  |
Beginning Balance |  | 250.1 | 235.1 |
Other comprehensive income before reclassifications |  | (7.2) | 19.1 |
Reclassification from Accumulated Other Comprehensive Income, Initial Adoption of 606 |  | (0.3) |  |
Reclassification from Accumulated Other Comprehensive Income, Stranded Tax Effects Resulting from the Tax Cuts and Jobs Act |  | 4.8 |  |
Amounts reclassified from accumulated other comprehensive income |  | (2.5) | (4.1) |
Other comprehensive income (loss), net |  | (5.2) | 15.0 | (48.2)
Ending Balance |  | 244.9 | 250.1 | 235.1
Foreign Currency Translation Adjustment |  |  |  |
Components of accumulated other comprehensive income, net of tax [Roll Forward] |  |  |  |
Beginning Balance |  | 230.2 | 229.7 |
Other comprehensive income before reclassifications |  | (4.4) | 0.5 |
Amounts reclassified from accumulated other comprehensive income |  |  | 0.0 |
Other comprehensive income (loss), net |  |  | 0.5 |
Ending Balance |  | 225.8 | 230.2 | 229.7
Net Unrealized Losses on Qualifying Cash Flow Hedges |  |  |  |
Components of accumulated other comprehensive income, net of tax [Roll Forward] |  |  |  |
Beginning Balance |  | 0.8 | 1.5 |
Other comprehensive income before reclassifications |  | (1.8) | 2.3 |
Reclassification from Accumulated Other Comprehensive Income, Initial Adoption of 606 |  | (0.3) |  |
Reclassification from Accumulated Other Comprehensive Income, Stranded Tax Effects Resulting from the Tax Cuts and Jobs Act |  | 0.2 |  |
Amounts reclassified from accumulated other comprehensive income |  | 0.5 | (3.0) |
Other comprehensive income (loss), net |  |  | (0.7) |
Ending Balance |  | (0.6) | 0.8 | 1.5
Pension and postretirement liability adjustment and other, tax provision benefit (expense) |  | 0.2 | (0.5) | (0.9)
Pension and Postretirement Liability Adjustment and Other |  |  |  |
Components of accumulated other comprehensive income, net of tax [Roll Forward] |  |  |  |
Beginning Balance |  | 19.1 | 3.9 |
Other comprehensive income before reclassifications |  | (1.0) | 16.3 |
Reclassification from Accumulated Other Comprehensive Income, Initial Adoption of 606 |  | 0.0 |  |
Reclassification from Accumulated Other Comprehensive Income, Stranded Tax Effects Resulting from the Tax Cuts and Jobs Act |  | 4.6 |  |
Amounts reclassified from accumulated other comprehensive income |  | (3.0) | (1.1) |
Other comprehensive income (loss), net |  |  | 15.2 |
Ending Balance |  | 19.7 | 19.1 | 3.9
Pension and postretirement liability adjustment and other, tax provision benefit (expense) |  | (6.6) | $ (12.5) | $ (2.7)
U.S. Postretirement Plan (“OPEB”) |  |  |  |
Components of accumulated other comprehensive income, net of tax [Roll Forward] |  |  |  |
Plan amendment | $ 26.8 |  |  |
Other Expense |  |  |  |
Components of accumulated other comprehensive income, net of tax [Roll Forward] |  |  |  |
Other expense, net |  | $ 2.7 |  |

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